Planoorapii co



F. HARDINGE.

COUNTER SHAFT..

APPLICATION FILED mmze. 1918.

1 ,3 1 1 ,969. Patented Aug. 5, 1919.

2 SHEETS-SHEET THR COLUMBIA ILANUGRAPII c0, WASHINGTON, n. c.

'F. HARDINGE.

COUNTER SHAFT.

APPLICATION FILED IAN.26, 19H].

1 ,3 1 1 ,969 v Patented Aug. 5, 1919.

2 SHEETS-SHEET 2- Tun COLUMBIA l-LANonllAml '10.. WASHINGTON. 0.. c.

Enema-11v HAitmivGnor OAK PARK, rumors, AssIGNoR T0, HARDINGE BROTHERS,

OFOI-IICAGO, rumors, 1A CORPORATION or ILLINOIS.

mourns-S AFT.

To all whom it may concern: 1

'Be it known that I, FRANKLIN HARDINGE, a citizen of the United States, residing at Oak Park, in the county of Cook andState of Illinois,have invented a certain new and useful Improvement in Counter-Shafts, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to countershafts. In shops where anumber of machines, lathes, and'the like are in use it has been customary to arrange the machines in rows, operating each row-of machines from an associated countershaft having its independent sup-- It is an object of my ports and bearings. invention to provide a counter-shaft construction arranged for disposition between machines having their backs to eaclr other, so that driving connection maybe had between the countershaft and the machines.

The preferred form of my device "consists essentially of a pair of shafts each carrying suitable pulleys for connection between the driving-'means and the machines, the shafts being mounted co-axially in three bearings one of which is located at the point where two of the shaft ends-meet, and the other two at the opposite ends of the shaft, the middle bearing support being held in alined position by a rigid frame structure extending between the two end bearings. Although contained in a unitary structure each shaft with its connected members is operable independently of the other, so that it is possible to drive different machines from the one device.

My invention will be understood by reference to the accompanying drawings, in which- Figure 1 is an assembled View of the countershaft of my invention;

Fig. 2 is a vertical sectional view of the device;

Fig. 3 is an enlarged sectional detail view of the central bearing;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 1;

Fig. 5 is an end view of my device showing its disposition between two benches each carrying a bench lathe; and

Fig. 6 is a side view of the structure shown in Fig. 5.

Similar characters of reference refer to Specification of LettersPatent.

'Patented Aug. '5, 1919.

Application filed January 26,1918. Serial no. 213,866.

similarparts throughout the several views.

Referring first to Fig. 1 the countershaft construction consists of 'a pair of hangers 10," 111 having sleeves 12, 12 and 13, 13 on each side arranged to receive supportin means, which will be described presently. The hangers are provided with hollow bosses 15, 15 arranged to receive attachments.- Dis posed centrally between the hangers 10 and 11 1s a support 16 'provided'with a pair'of roller bearings 17, 17 separated by a suitable washer 18 to support a pairof co-axially mounted shafts 19 and 20. The outer ends of these shafts are mounted in bearings 22 and 23 provided in the hangers 10 and 11 respectively. For convenience we shall refer to the shaft 19 and its associated pulleys and other mechanism as 25 and the shaft2O with its associated mechanism as 26. The unit 25 carries a pair of tight pulleys 27 and 28 and a pair of loose pulleys 29,. 29, and the unit 26 has a pair-of loose pu'lleys 30, 30 and a pair of tight pulleys 31. It will'be understood that the tight pulleys are secured-t0 the shaft by means of' set screws in order that when these. pulleys are driven the connected parts will rotate with them. It will beseen that I have'p'rovided shafts having flattened portions arranged to be engaged by the set screws hold ing the tight pulleys. "A pair of belt shift "ing devices 33 and 34 is provided for the unit 25. These belt shifting devices consist of a bellcrank lever having one arm connected with a slidable sleeve having a yoke arranged to embrace a belt. By imparting movement to the free end of the bellcrank lever the belt will be shifted from the loose to the tight pulley. A pair of belt shifting devices 35 and 36 similar to those just described are provided for the unit 26. Extending through the hangers and the central support 16 on each side thereof are pairs of supporting rods 37, 37 and 38, 38, the object of which is to add sturdiness to the structure, and also to provide supports for the belt shifting devices.

Referring to Fig. 5, I have shown a pair of machine benches 40 and 41, each mounting a bench lathe 42 and 43 having cone pulleys 45 and 46. The countershaft of my invention is shown at 47 disposed between a pair of uprights 48 and 49 extending from the machine bench supports. These uprights consist of pipe, and I have arranged so that they mav be inserted into the sleeves 12, f. theh g rse d re ai ed by were of set.

i' the machi e teeth leg is an arm having'a'bearing'to'support a driving shaft; 50 connected by mean s oij a belt 51 to a motor 52 supported above the machine benches. The shaft 50 carries four I pulley-s 52,- 5s; stead 55, the uii-e'ysssand 53-being disposed directly below the nit 2h, and the pulleys 54 and 55 are disposed below th un t ,6 The. pttl1eys .52, 5.3;, 5.4; and 5.5. eve.b.e1;ts..5.7, 5.8, and; 6.0,extending. upyerdly t c nnect w th the loose p111l1eys29 and: 9: the unit 25. d the-loose pulj-leys. 3.0,, 3010f the ultit26. As. the. con ections are how in the dra ings, if. thev motorwere-in perat on and power beingtransmitted to.

he c unterelaatt t ough the shaft. .505 the. rotate without impare. ing mot on to he: cone pulleys- Gear-1d, 631 of oose pul eys wou d the. units, 26; I have illustrated the. shafit 5,0,ashaving pulleys of 'two. difierent izes, by connecting. the-larger pulley-s t0, theire soeieted ight pulleys. on t e s afit,

a higher speed; will be'obtainedi than by cohp y i eeountershaft construction, it

W ll. be possible to. provide. an arrangement having more thantyyosspeeds, without; den parting firQm the. spirit 01% my invention. The device shown at 7.0 f n-Fig 5;is-a wheel lattes th matsatt: atex be theme; :e eat esh; be meme; the weem ss eeet etfeteete.

hearing arried by a sup-port secured the hol ow oss s. 15,. endthis. hee i r enge tby efe'p y carried n the 'haft 73 to have'bonnection with the pulley 74 of the unit 25. A similar pulley 76 is" provided for the unit 26 to drive a similar or other attachment carried by the hangerr I- have found that this is a very eoeyeeleet; driving grinding chines or the like.

Having thus described invention, What I .elaim ar new and d ei e to see erey L ter Rehea 15- the United at s is;

A'eonntershefi eee tru ti ncompr si g a p ri h nger a upp rt ng: m ans theref r, pair 01: pulley sh fite avin th m. ages.

s ia y ax a a their inner ds, n;

proximity, a central; uppo t ha i g a beak ingfor said innee ends. and a pair of .19- porting rods extending between the hangers and secured. to. th cent a upp t -2. A eoruetersheftcon truc n,comp i ing) ventieally extending: suppo ting m an a. pairof:ha gers-adjgustably supported on said upporting m mes, e pair o depend n ly per ble. sha t hav ng th ir axes, su tana y coax al, a. centte ea ing g dly support d by means extee a g; e ween he hang r he inne iends o sa d: ha t bein ll y rt dy eiclbeer-mg end; th

outer-we s. ofi said shafts; being 251119129 "ted y said' hang rs, whee by both of sa d h f y be dj sted in etticel directions In witne s. wheneofg. I h z unt sub cribe my nemetihis. 22ml day of J wary, 19.

-. HAeem-ee .Witnesses: 7

, 6;; Ann 6:, Amnesty WLM RQQBM.

V I F Mme. e 

